need help with an rsync patch

[Sherin A]

On Wednesday 28 August 2013 04:14 AM, Kevin Korb wrote:
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> My opinion on backups is pretty simplistic.  If a restore of my backup
> doesn't bring me back to what I had when I backed up then I don't have
> a backup.
>
> If I have to restore something and the relationship between files that
> were hard linked in the past is lost that might not be something that
> I even notice immediately.  Maybe not until the file is changed and
> now there are 2 versions of it in different places since the
> relationship is gone.
>
> Either way, not backing up the hard link relationships duplicates data
> on both the backup and on any potential restore.
>
> But even more importantly, the original question was about excluding
> all files with linkcount>1 from backups.  That means that any file
> important enough to have in more than one place would in fact never be
> backed up at all.  That is crazy.
>
> On 08/27/13 18:37, Henri Shustak wrote:
>>> The solution is not to refuse to backup any file that is a hard
>>> link. There are legitimate reasons to have hard links and
>>> ignoring them means you aren't backing up everything.
>> I agree that preserving hard links may be important in some
>> situation. There are certainly legitimate reasons to preserve hard
>> links within a backup.
>>
>> To more than a couple of years I have been weighing up the
>> advantages and disadvantages relating to including a hard link
>> preservation support within LBackup. The latest alpha build of
>> LBackup now includes support for hard link preservation.
>>
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>>
>>
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> 	Kevin Korb			Phone:    (407) 252-6853
> 	Systems Administrator		Internet:
> 	FutureQuest, Inc.		Kevin at FutureQuest.net  (work)
> 	Orlando, Florida		kmk at sanitarium.net (personal)
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This is not crazy. Why a privileged user need to create multilevel hard 
links . This issue has been approved by secunia security community.  
Hope they will report it as a  vulnerability , because this POC has been 
exploited successfully  and it is affected by all software that  use 
rsync as a backup  and restore  tool.

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Regards
Sherin A
http://www.sherin.co.in/